Edexcel IGCSE Biology 1d Estimate Simple Calculations Topic Practice

Pearson Edexcel International GCSE Biology (4BI1)

1 The nature and variety of living organisms

(a) Characteristics of living organisms

(b) Variety of living organisms

2 Structure and functions in living organisms

(a) Level of organisation

(b) Cell structure

(c) Biological molecules

(d) Movement of substances into and out of cells

(f) Respiration

(g) Gas exchange

(j) Co-ordination and response

3 Reproduction and inheritance

(a) Reproduction

(b) Inheritance

4 Ecology and the environment

(a) The organism in the environment

(b) Feeding relationships

(c) Cycles within ecosystems

(d) Human influences on the environment

5 Use of biological resources

(a) Food production

(b) Selective breeding

(c) Genetic modification (genetic engineering)

6 Experimental skills

(a) Problem-solving and application

(b) Investigation planning and methods

(c) Observations, measurements and variables

(d) Analysis, communication and evaluation

7 Mathematical skills

1 Arithmetic and numerical computation

1A Decimal-form numbers

1B Standard-form numbers

1C Ratios, fractions, percentages, powers and roots

1D Estimate simple calculations

2 Handling data

5 Geometry and trigonometry

Question Bank/IGCSE Edexcel Biology/7 Mathematical skills/1 Arithmetic and numerical computation/1D Estimate simple calculations

Question typeDifficulty